Unpolierter Malachit | Kongo Triceratops-wirbel or—as is the case for

or—as is the case for most ancient sandstones—filled with a chemical cement of silica or calcium carbonate

which exhibits various colors

molten droplets that subsequently solidified and condensed into chondritic masses

Description: An ammonite mounted on a handmade

Aufgrund seiner charakteristischen hellgrünen Farbe und seines Vorkommens in der Verwitterungszone fast aller Kupferlagerstätten dient Malachit als Anhaltspunkt für die Suche nach diesem Metall

Unpolierter Malachit | Kongo Triceratops-wirbel or—as is the case forOrigin: Congo Size: H52cm W40. 5cm D18cm Weight: 30. 10 kg Description: The unpolished front shows a cross section through botryoidal forms and unique combinations of dark and lighter shades of green. Additional Information: Malachite, an accessory rock but a widespread copper mineral, basic copper carbonate, Cu2CO3(OH)2. Due to its striking, bright green color and its occurrence in the weathering zone of almost all copper deposits, malachite serves